Linotype-mold.



P. H. LYNDS.

LINOTYPE MOLD.

APPLICATION FILED JAN.18,1911.

Patented Nov. 18, 1913.

amen/tor m gig/L441 a i 1 1- UNIT D STATES PATENT OFFICE.

FRED HARRIS LYNDS, OF WOONSOCKET, RHODE ISLAND, ASSIGNOR TO ELECTRIC COMPOSITOR COMPANY, OF NEW YORK, N. Y., .A CORPORATION OF NEW JERSEY.

LINOTYPE-MOLD.

Specification of Letters Patent.

Application filed January 18, 1911. Serial No. 603,209.

Patented Nov. 18, 1913.

. To all whom it may concern:

out or hollow linotypes.

The invention 'may be employed as an improvement on the linotype mold which forms the subject matter of the Petri-Palmedo Patent No. 1,005,463, granted October 10, 1911, and is so shown in the drawing.

The object of the invention is to enable the linotype to be pushed out of the mold and stripped from the -core or cores more easily and quickly and with less liability to injuring the slug than is ossible with the linotype molds of said prlor application.

The invention consists in the employment of hollow cores having thin walls instead of the solid cores shown in said prior application.

In the drawing,-Figure 1 is a rear view of a linotype mold in which this invention is embodied. Fig. 2 is a central sectional view taken in the plane of line 2 2 on Fig. 1, except that one of the cores is sectioned. Fig. 3 is a perspective view of three detached cores showing one of them in section in a plane at right angles to the section shown in Referring to the parts by letters, Arepresents the mold which is, as is customary, a built-up structure having a mold slot a extending through it from front to back.

B represents a core which has a tail piece 12 adapted to fit and to be secured in a recess a in the rear face of the mold. The rear face of the core and its tail piece, when the core is secured in place as stated, are in the same plane with the rear face of the' mold. The length of the core is not material, although preferably it should be of such length that several cores may be used in the moldslot. The thickness of the core should be less than the width of the linotype slot; and the height of the core is such that its front end does not extend to the front face of themold by about a quarter of an inch more or less. These cores are hollow and have thin walls; and therein lies the difference between them and those cores which are shown and described in the prior patent referred to.

Experience with molds e nipped with solid cores and others equipped with hollow thin-walled. cores shows conclusively that the linotypes may be ushed out of the mold slots containing t he hollow cores and stripped from such cores more easily and quickly and with less liability of injuring the linotype than is possible when the solid cores are employed. The thinness of the walls ofthese cores makes them somewhat flexible and yielding under the pressure due to the contraction of the linotype. It is probable that this is the reason why linotypes cast in molds which are provided with hollow cores, as shown and described, may be removed from the mold slot and stripped from the cores without danger of-injur1ng the linotype.

Having described my invention, I claim:

The combination of a linotype mold having a mold slot through it from front to rear, combined with a hollow core immovably held within said mold slot, said core having thin flexible imperforate walls.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

FRED HARRIS LYNDS.

Witnesses: W. BuswnLL,

W. L. FULLER. 

